vs
QUICK ANSWER
"Qué haces" is a form of "qué haces", a phrase which is often translated as "what you're doing". "Juan" is a proper noun which is often translated as "John". Learn more about the difference between "Juan" and "qué haces" below.
qué haces(
keh
ah
-
sehs
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (informal) (singular)
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).